| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f9af914ed2fb00cd4f1b8b1a28964e4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2523-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J35-0006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-252
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-887 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J35-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-05 |
| filingDate |
2000-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_174f6ccb8796f7157fb387420778d5e9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eb7c75657a48aaf0e6f729161cc43b91 |
| publicationDate |
2002-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-499419-B |
| titleOfInvention |
Catalysts for methacrylic acid production and process for producing methacrylic acid |
| abstract |
Improved catalyst for use in production of methacrylic acid by vapor phase oxidation reaction and/or vapor phase oxidative dehydrogenation reaction of at least one compound selected from methacrolein, isobutylaldehyde and isobutyric acid is provided. This improved catalyst is a composition composed of (A) complex oxide containing as essential components molybdenum and phosphorus, which is per se known as a catalyst for the above reaction(s), and (B) complex oxide containing as essential components cerium and zirco-nium. When this improved catalyst is used, the operation for producing methacrylic acid can be stably continued over prolonged period. |
| priorityDate |
1999-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |